To use a Dual Voltage Electric LED Bulb E26 in a E27 environment/ socket?
If you have a problem connecting E26 bulbs to E27 sockets due to the shortage in length with E26. You can solder a small V shaped plate to the E27 socket base to eliminate the difference in lengths between both. But you have to be careful to prevent contact between the two terminals of either the socket or the bulb. With such solution you have to only buy a B22 to E27 converter and your bulb will work well.