Does the 743 have an actual battery tray or holddown, or is the battery just sitting there to the right of the engine? Mine is the latter, and seems to basically stay in place, but I'd like to secure it better. Wondering if there was a proper group 31 tray, or I should just adapt a generic hold down? This is part of operation "clean up decades of dirt and fix all the little things I've been ignoring cause they weren't major". Given the weather up here in Canada now (my 743 is outside), this is presently more of a planning/parts collection activity until spring.