I have this same combination and don't have your alignment issues.
So you don't see the weight of the color head making the stages sag? Oh well, I am keeping the enlarger but will sell the color head with my nifty remote fan mod. I hope to have at least one more enlarger for workshop participants once I get the space so all is not lost....
"I always put my fb prints in a filled aquarium on the wall.
No problem with dry down times..." APUG'r Willie Jan