I think its more to do with ground trades degradation of capabilities.
In the new MOD training regime; Fault Finding is a separate course from trade training?
In the last few weeks I have heard a few disturbing stories ranging from: Chinook engineers struggling to fix one at Staverton for some four days when a passing "old boy" recognised a visiting WO (sent to see what the issue was) stuck his nose in and pointed out what the issue was, more than 18 years since leaving the RAF!
In a second example; There was recently a perceived "need" for a WOs pre-departure walk-around before Puma's left a certain maintenance base? When the WO left the Stn Questions of who was going to do the check were asked! Surely Team Sgts and Chiefs are supposed to do that sort of thing? (or why can't they?)
What on Earth is going on?
Possibly the trouble with RTP is that the parts removed are...not good enough for use without being checked/repaired?
Just having "Lots of bits" does not make any of them serviceable.