you shouldn't need any spacer on pump bolts, but that might be to take up the slack on a too long bolt, none needed with the aduster either .... yes a mirror does work to read that number

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature we find it attached to the rest of the world" John Muir
"When we tug a single thing on an old truck, we find it falls off" me
Some TF series details & TF heater pics & Rust-a-holics Unanimous parking lot