Another factor about CL. My oldest RC is less than 7 years old, and has fewer than 200 flights only one "incident" that required almost a week to repair. My oldest CL is a Veco Smoothie I built in 1968, over 500 flights, 6 "Non-horizontal" landings, none of which required more than 2 days work. I have had it long enough to have replaced 2 sets of maple engine bearers, one ply firewall, two pairs of wheels, and recovered/repainted twice.
And on the topic of Fox 35s, I am in the process of replacing the crankcases on my 8 35s in order to be able to use mufflers. Three of those 8 I bought in the 1960s before I went into the AF. Try finding parts for RC engines from the manufacturers for anything close to that old. I even had one of the Japanese reps at the Toledo show laugh in my face when I tried to ask about replacement parts for one of their 6 year old CL 35s. Example of their customer satisfaction policy. His answer was why fix an engine that old? And nobody flies CL anymore.