I have that same mill, now sitting idle because the bolt holding the lift spring in place has fallen free into my disaster area of a garage. One of these days, I'll find it and put it back together. Consider to apply thread locker to the base of the spring and to the bolt in the top. My spring also unthreaded inside the column!

It's great fun to make chips. The DRO was probably the best investment I made in the machine, seconded by a power cross feed.