I have a Hitachi 2.25 hp router. It works great but I have a question about the collet. When I change bits, it takes a good hard twist to free the collet and get it turning. After I get the initial pre-load broke, the bit will not come loose. I have to continue loosening the collet nut until it hits another sandbar and I have to get the wrenches out again and apply more twisting/loosening torque. Then the bit falls free.
Is this normal for all collets? Sort of like a sand bar at the beach. The collet will loosen but then it runs a ground again, and I have to apply a second torquing action to get the bit out.