Fluke 720A replacement of those 5kOhm trimmers

[perdrix]

Well it seems that almost all the 5k\$\Omega\$ multi-turn trimmers in my 720A seem to have gone bad.

I'd like to confirm the best way to remove the lower board with the trim-pots.  I've already de-soldered the fat black wire that connects to the inner end of R1047, but before I go any further I'd like to get best guidance from those who've "been there, done that" on how best to remove the board - while at the same time de-soldering as little as possible.  I think I will have to de-solder the fat red wire from the positive output terminal but perhaps not ...

I propose replacing all of these with Bourns 3006 5k parts: p/n 3006P-1-502LF.  Are they a good choice?

I await guidance. 

Thanks, David