Dave, welcome to iRV2.com. We are glad to have you join us here and look forward to reading of your adventures and experiences. Congratulations on the Vanguard, I wish I could help in the matter. Have you tried contacting the manufacturer? I will put in a short cut for this post into the 5th wheel section for more exposure and get you some answers. GOod luck and enjoy the forum.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7