Hello does anyone know where you could pick up some cooling head bolts for a dynamite .19. I can’t seem to find some besides for a .21 engine would it work in the .19?

If you find out what kind of screws they are then you can find them anywhere. Most used are M3 screws.

You have to know the Thead pitch and length to buy extra bolt is bulk. Or just by the manufacture part.

OK, I did look for the manual and exploded view. The product number is listed and easy to find
Dynamite Head Screws 2.6x12 (4): DPS 12, .18RE | Horizon Hobby

They are M2.6 x 12
M2.6 can also be replaced by M2.5 which is easy to find everywhere.

Here you go..

McMaster-Carr