Wow thanks Erv, I just finished installing a Prizm 4 in my son's new saber for Christmas, and I just opened the new 5.1 that I bought for my own lightsaber walking stick (undergoing it's 3rd regeneration) and I can't get over how much smaller it is. It is actually too small to fit in TCSS's battery and nano biscotte chassis. Brilliant work, this will allow me much more leeway to fit the board above the battery in the chassis I am designing.
Once again, well done Erv.