Patrick & Casita
Just got back from a trip. Thanks for your replies! Both are helpful. I looked at the center drawer support rail, the side of the sink cabinet, the outlet box for movement, and could not see any. All are immovable upon pressing against them. The drawer center slider guide is a great idea - but mine is not broken. So, I removed the brown, plastic side guides and the drawer closes. So, one of them may have moved. One is split where the screws were installed at the factory. Removing it first did not allow the drawer to close, but removing the undamaged one did. It gave about 1/32 inch additional sideways clearance for the drawer to pass by the outlet box. So I filled the side guides' screw holes with Durham's Water Putty, & will re-drill them giving the sideways clearance needed.
I measured the distances from the face of the sink cabinet to the outlet box. It allows 17 1/8 inches for the drawer length. The drawer length distance from the back of the drawer to the inside of the face where it contacts the sink cabinet is 17 3/4 inches. Why couldn't Casita
locate the outlet box 1 inch farther away from the drawer face? There's 6 1/2 inches of space between the edge of the outlet box and the inside of the Casita to do this. Maybe the installer at the factory just had a bad measuring day when the outlet hole was cut. If you feel like it, I'd be curious what distances are allowed in your Casitas.
Thanks for your help.