I am trying to slide the heater core into place, problem with the valve control lines crashing into the IHKA housing while I still have about 10mm of sliding in to do. Wrong technique?
in the pics I am showing you the valve pipe crashing with a 1/4” extension pointing to it. Other pic is for reference on where I am working, up behind where the core slides in.

in the pics I am showing you the valve pipe crashing with a 1/4” extension pointing to it. Other pic is for reference on where I am working, up behind where the core slides in.

