M107-M110 RHEOSTAT ROUNDUP HERE. ARE A COUPLE OF ILLUMINATING S TIPS. So what's new, pussycat? If you've got any of these SP jobs M 107, M 108, SM109 or Ml 10 this is new for true-blue you. The rheostats for some of the fire control instru- ment lights are going kaput. The way the electrical wizards figure it, the current surge,when you start j the vehicle,is ruining rheostats that are left in the ON position. The cure is simple, make sure that all electrical are OFF before sou start the vehicle. If you have an M I08 or M1109, you can fall out ... but if you have an M107 or M 110, here's a tip. The rubber moulded part of the reticle illumi- nating light on the M 138 telescope mount is getting SAVE PUSH ON THE iHE METAL. RUBBER. /,1 cur and torn because some heavy handed types are pulling on it when they disconnect the light from the telescope mount. Cure for this is to keep it from happening. Remem- ber it like this push on the metal and you save the rubber. 1r/ A-