Yong Heng Clone with busted Piston

[csexton]

My Yong Heng clone has a busted piston. I need to replace the piston and high pressure stem and ring. My clone is somewhat different on the high pressure piston. Will the attached piston and high side work or should I replace the whole head assembly. I a little worried the air tubing will not line up exactly like the old head. See photos. Any suggestions?
Charlie 

Current setup

See the broken piston and different high side ring than replacement. 

Original 

 

[cootertwo]

Very interesting.....

 

[Eaglebeak]

Replace the whole top end. The three-ring pistons have slightly different dimensions than the four ring ones. The only way that you can be sure that everything matches. is by replacing the whole assembly. The one in your photo is only $58 so it's not going to break the bank. You may be able to use your original plumbing or a hybrid of the two. If you can't make the plumbing work, make sure the new piston and rod have exactly the same tolerances as the old one or it may toss a leg out of bed.

 

[csexton]

Thanks for the information. 
Charlie