Well with Marty Yewer's help from Shockwave Weapons, I think I've found a solution for the recoil problem these rifles have. It involves buying an HK-33 stock with metal backplate, a Buffer Technologies recoil buffer and an HK-21/23 buttpad. I installed these on my 52 and tried it out for the first time yesterday and the difference was amazing. Not only was the rifle fun to shoot, it didn't beat the hell out of my shoulder. I know we shouldn't have to pay for the extra cost involved in getting these parts to make the rifles better, but if some of you want to actually have a descent rifle then this is the best way to go.
I also noticed one other thing about mine. It will feed perfectly from the tight fitting Polish synthetic mags but will have a few problems with looser metal one's. So if you have a mag and it has the least bit of wobble in it then more than likely you'll be experiencing some ftf's. Keep that in mind.
Finally, I want to personally thank Marty for all the e-mails and help he gave me. He actually posted a topic concerning his modifications on HKPRO but it was immediately deleted by the mods over there. Luckily I was at the right place at the right time to read it and without that post and his help, I wouldn't be as pleased with my SW-52 as I am right now.