If you want dedicated service from your groundcrew, you must dedicate them to their aircraft. And you probably have to dedicate the aircraft to the crews.
It was A Line and B Line in my day. It was only when I reached 1312 Flight, with its own aircraft and its own groundcrew that I saw just what could be done to sort out those snags that are written up 'NFF'.
I remember a Greenie working for hours to sort out a radar snag and not fixing it and trying something else after the next sortie - and going through that procedure about four times before establishing it wasn't electronic at all, it was mechanical and to do with the scanning mechanism.
About 2 years later, when I was SNavO, Wg Cdr Ops asked me what I thought of a proposal to reduce the scan from 180 degrees to 120 degrees in order to prevent damage to the mechanism. The entire fleet had been suffering from ropey scan patterns and no-one had taken the trouble to really sort it out until this JT got his teeth into it at Stanley.