I have some G24 LED lamps, and have a problem with two types of sockets, the socket is not deep enough for the bulb to seat. The bulbs are G24D, the sockets are G24Q , if that makes any difference. One batch of sockets had a small post inside which I could break off to allow the bulb to seat, the other socket wasn't so easily modifiable. The tail on the bulb measures about 22.5 mm. I cut the tail back to 18.5 mm and it works with the sockets. Do I have bad bulbs, sockets, or luck? Is there some standard dimension for this portion of the bulb?