If youre still considering a yong heng, i got the hardcover version from seller (kaylie52013).They have been selling on ebay since 2015, unlike most of the yong heng sellers on ebay that created their account in the last year. That one even comes with the manufacturers plate on the side. I do recommend a oil/water addon filter. Just filled up my hatsan flashpup tonight and was having problems with air leaks on gun. So ran compressor for 15 mins in a humid environment. I had water droplets around fill probe and gun air gauge port (where the leak was). Outside of the small moisture filter included, id recommend a pressure gauge upgrade. Compressor gauge was was out of sync with gun gauge by about 300psi. Tried to give the ebay link, but guess im too new
Yes, you need a section of the tampon filter at each end to keep the sieve contained, and also packed tight for best results.
Duh, never mind, forgot about the bleed valve built into the valve. Senior moment there, sorry.