just to explain the binding aluminum screws for you guys.aluminum heats up very quickly and also disapates heat very quickly.the tranny housings are a graphite impregnated molded plastic which is extremely abrasive.from screwing the screw into the housing,the friction creates a ton of heat being that there is no lubrication.aluminum has a tendency to heat up and expand quicker than steel due to its properties therefore when it it expands it will more or less weld itself in place.(not really weld but you see where im going with this
).now what you can do to avoid this is to put a lubricant on the thread to minimize the friction causing the heat and expansion,use a tap that will cutt the threads into the hole instead of roll forming it with the screw,or use a steel screw which will not expand as fast as the aluminum.i,however,get lazy and just lube the screw so i only need to do it 1 time.
