I also have some new 750W S4 lekos, the
socket assembly looks the same and I think they will swap easily, but I need to convert a few of the older ones.
My issue is that I bought some 750w lamps (HPL750-C) and they don't even fit into the old
socket, there is an extra metal pin. the older lekos do not have a place for this pin, but the newer 750w fixtures do.
Is there a 750w lamp that does not have this extra pin? and is the wiring in the
socket assembly really not able to handle the additional 250w? they are not S4 jr, just older full sized S4 lekos