Maybe if you tailored your negatives to the cold light, you would have been satisfied...
I put my Beseler 4X5 MXT , condenser head, to pasture years due to a stiff focus issue I could not fathom.
I tried many enlargers during it's semi retirement and still occasionally use a LPL 670VCCE.
After finding a older model Beseler 4 x 5 for parts and replacing the bellows/ focus assembly my preference has become the condenser lamp house.
I do have an old cold light for the Beseler which I have not yet tried as It would require using under the lens MG filters and I make use of the red, safety, under the lens filter.
Such is my confidence in the Beseler I have on order a heat absorbing glass as a minor upgrade.
Many years ago I butchered , with considerable success, a Durst enlarger in which I had a glass insert cut then gently sandblasted it to produce a diffused light.
One boring day I may do the same for the Beseler .
Darkroom photography is full of myth, misunderstanding and elaborate graphs accompanied by boring photographs to prove a point!!
Take care , be safe and get it fixed.