[pHaestus]

MMZ_Timelord:

If I may be so bold as to make a suggestion, I'd recommend tapping a small hole in the bottom (which is the highest point) of your heatercore and putting in a little needle valve and 1/8" stretch of hose. You can dump that back into your main loop up in the top part of your case. Doing this should let you clear the air out of the tanks of the core really easily; otherwise I suspect you'll have to pull it out and shake it a bit...