Im wanting to carry my new bike (Yamaha TW200) on one of these: Ive got '84 K5 with 10bolt rear, ive got upgraded chromoly axles. But im still concerned about the weight. The rack weighs 35lbs and the bike is 265lb. Ive also got my spare tire and 5 gal. gas can along with hi lift jack mounted on bumper. Can the Blazer handle this kinda weight? Short term? Long trips? What should I watch out for etc? Here is my bumper.