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I use the paint products from Phoenix precision Paints, They also have a great booklet telling you how to do it. I also use artists Sable hair brushes, quite expensive but really soft and the hairs don't fall out. Also when you paint the matt grey undercoat it shows up all the imperfections !! so you have to refinish the parts again !! good luck with this ,and there will be lots of help on this forum if you ask.! Also red projects out and greys recede etc etc
So, you machined it with just the loctite holding the journals? Wow. That does tend to make one a believer in the stuff, if I wasn't already. But yeah, get loctite hot and it will loosen up.
And, I'm amazed at the craftsmanship, that is a pretty neat engine coming together!