Well, I did it again. I hit the R/C flea market at the local R/C field. I bought: a Cox Medallion .09 R/C with muffler, an OS 10 FSR, an OS LA 25 for which the vendor threw in a second 25, A McCoy 35 lightning bolt, and a smaller R/C 3D plane. When I checked the LA 25's, I found out why he donated the second 25. One 25 had weak compression the other had a severely damaged backplate. I had planned on using metal backplates anyway. The OS 10 FSR has no compression.