I have been trying to find a replacement light bulb used in the entry stairs of my Valencia 36a DP. It is the glass tube type with metal caps on both ends. It has what I think is a Sv6.6 mm base and it is 1.45 inches (37mm) long. I found lots of 211, 212 and 214 type bulbs including LED replacements, but all of them are either too big a diameter or too long or short. I even called Bulbtown.com and was told they don't carry it and didn't know where I could get one. Any suggestions?