Okay, update........I finally received my new piston/liner from Hobby People (great service BTW!) and the Magnum parts fit perfectly! I only had to use one piston pin retaining spring also, as the Magnum design only lets you put the pin in one way. Not too shabby and for a total of $47.00 (S&H included there) I'm quite happy with the results.
Upon looking at the OEM parts, the peeling that happened to the interior surfaces of the liner was VERY apparent, and I'll post a photo of it when I get home from work. Also, it looks like the piston was also scored, which I didn't notice in the first two set's I replaced. So, I'll wait for a nice day and take it out to the field to run the new parts in and see how it goes.
Stay Tuned.......