no it is not that hard , but t o end up with a watch that doesn't look like a pale copy you must study a bit (and also spend more unfortunately).i have been reading about the 5711. Overall seems like hardship to match to the GEN is really the dial ? Factories were able to replicate case, bracelet etc?
that said the latest dial are looking very good and although i am a bif fan of the original pf case a a base some here are saying you achieve excellent result in modifying 3kf of ppf ...