Good work Skullmog. When positioning the BB try a straight edge or string between the outer faces of the front and rear sprockets to see if the alignment is right. Very tricky to do (I know) but it allows you to position the BB better as it is a difficult shape to get a visual reference on. Make sure the rear wheel is pointing square at the centre of the car first. I use a laser level on the side of the rear wheel aimed at a target on the back of the front number plate for that. When it is all correctly aligned the belt shouldn't be running hard up against any of the sprocket guide plates, front or rear. They should be guides, not restraints.
Glad you spotted the cracked tank bracket before it got worse, don't forget to do the lower ones as well as the fronts. Check the straps tension to reduce the tank bouncing.
