you could do a proper swap to a 12v starter, but if you have trouble starting it cold, you'll still have the same problem - I'd think maybe you just don't have the drill down on cold starting, not giving it enough choke

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