VJ there are a lot of good quality replacements available. My DL mixer has Alps blue velvet linear pots and my DLB has Alpha pots with a center detent. Both work fine and feel very smooth to operate even though I only use the balance to equal the L-R audio signal on some recordings. The tone pots are replacement later style A/B in one mixer and Bourns in the other. Both mixers were serviced in different years by Buzzy Beck and he installed the replacements so I feel confident on either choice you might make. My DLC has all originals in it. All three mixers have the original PA1003 cue switch and as of yet I never had a problem. If your Alps RK40 pots have solder pins and not holes they are original UREI type and not original Bozak pots. They will work fine but the taper slope is a bit different than the originals used in the Bozak mixers. If you really get stuck I am sure John K on this board can get you originals for a fair price direct from Buzzy Beck.
Last edited by Captainjr : 11-03-2013 at 01:16 AM.