I assume you have the Actia guage cluster. If so there's an option for large letters for gear indicator, or the other modes which puts the gear indicator small and to the right. Did you get the chassis owners manual?
The temp gauge should not budge unless you overheat. Mine has never moved from just under halfway...in 10 years over 30K miles, towing all manner of things - jeep, boat, bikes, cars, etc., in 100+ temps, up grades, nada never.
Oh, and welcome to IRV2!