totally cool, can't wait for the next lesson. i see shop lights disappearing nation wide. i've seen those same fixtures sitting in piles. companies go to flouro to save some dollas and the electricians ( or light companies) doing the swaps, really don't know what to do wit em. last time i seen some electrical contractors doing a swap, i dropped a bug in their ear. i also see lighting contractors selling their converted cast-offs on ebay. you can get a decent 400watter for like $115 wit shipping. way to go!!!!!!!!