When I added my second tank on the right hand side. I found the two
plastic screws did not want to come out. They were then drilled and picked
out. Once they were out of the way I thought that it would be a simple
task of screwing in the two new bolts. It wasn't to be, the threaded hole
was off center and the bolt could not be screwed in. I had to grind down
some of the floor around the bolt hole to finally get the bolt theaded
thru. Once that was done the tank attached no problem and lined up
perfectly!!