I have come across a few instances where the only problem in 14-inch sets is a weak CRT. I have access to many 14-inch sets with defects in the main board. I would like to swap these weak CRTs with the good CRTs from the bad sets. The pin system in all these tubes look alike to me, even if the tube types and manufacturers are not the same. Are you guys aware of any pin system incompatibilities here? Otherwise, it seems a simple matter to transplant the tubes with yoke and correction magnets undisturbed, into the good sets with weak CRTs. I know that the swap may not be that feasible because of differences between yokes, horiz and vert voltages, etc but I'm willing to try my luck.