I got my JF 143000 with 313x movement serviced with
misiekped (Mike) and I'm glad I've done it. He always responds (sometimes it takes a few days). He honestly assesses the situation and he educates the customer. When I talk to Mike, I know he takes pride in his work and goes the extra mile. He packed the watch well before sending it back with signature confirmation. He tests the watch before sending it back. In addition to the timegrapher test, he also does a 10 bar water pressure test on the 143000. It's good to know that I can send a watch to someone that does a great job, rather than trying to look for someone locally that may not do a good job. If you have a watch with a SH313x clone movement from JF/ARF factory, Mike is your guy. He even does amazing projects like modifying them to work with the GMT hand for the GMT Master II and the Explorer II.
To service or not to service? That is the question.
When I purchased the watch, I immediately budgeted for servicing. If I get another watch from JF/ARF that has a 313x like a sub, datejust, explorer I, I'll immediately service them (and add parts when applicable.) Why?
The most common reason people state is that the factories are dirty, dusty, they either put too much or too little oil.
A lot of people debate about this and say if the watch is working, you don't need to service it. I disagree.
The reason you should service is the China clone parts are crap. Either the quality control in China is bad or their parts are inferior. Either way, there are pictures online comparing the gears of a clone to a gen and there is a difference and this affects functionality. The teeth on the gears are either worn down or not clean. Even a worned down or missing single tooth of a gear affects the watch's performance. You need a watchmaker that will honestly assess the movement of the watch.
This happened to me. I purchased a JF 143000 recently (August 2018). The TD's timegrapher showed that the watches movement was perfect. It was not. On the first day after a couple hours, I wore it I noticed the watch was stuck. After a while, the second hand would move again, then it would get stuck at the same place. Now I have a choice, send it back to China and worry about shipping, customs, etc. or send it to Mike. I was planning to service the watch anyways so I sent it to Mike.
The problem was the reversing wheels. If you talk to other forum members they also replace the reversing wheels with gen reversing wheels. This is why. The China clone parts are crap (unless your lucky to get good parts). Second reason to service is to make sure it is clean on the inside and properly lubricated.
After servicing the watch runs smoothly, is quieter and if I listen to it very closely, sounds amazing.
Ride till it dies or service it?
There are two camps
One camp believes that you shouldn't service a clone as you would a gen. People in this camp generally care more for the looks and if it dies, they advocate just putting the money you would spend on servicing into a new watch.
The other camp believes in servicing for a few different reasons.
--Different factories are moving towards clone movements. The best 1:1 of some models have the clone 313x and not the ETA
--People like the novelty of the clone 313x over the ETA. It's different, it sets the watch a part. Also the movement has a larger diameter than the ETA.
--People believing in servicing it anyways. An ounce of prevention is worth a pound of cure. Wouldn't you want to enjoy your watch at it's peak performance?
Thank you Mike for taking the time to work on my watch. I hope that I am able to send you more jobs in the future.