I'm still trying to figure out why you haven't printed anything yet.

Also those bulldog clips will have to go - the print heads will catch those on almost any print over something tiny in the centre of the plate. They will also get caught when you calibrate, start a print or home your axis :-)
I use slivers of kapton to hold my build plate in place. Bulldog clip[s just don't work once you actually start using the machine.

The only things I've done to my flashforge creator (essentially the same machine) are print area duct fan, 3mm aluminium build plate as the one it came with wasn't flat and we put an on/off switch at the front.

That's it - and she'll print anything :-)

So before you completely rebuild what is probably a perfectly working machine - try using it :-)