Need some serious advice . I purchased a set of " H " style chains for 17.5x 24 R4 tires. I have tried to install them three times already , and come up about 9 inches short on the final outside connection. Any hints as to what I may be doing wrong? Chains are straight , and not twisted when attempting the install. Have raised tires off the ground , and also deflated the tire to put them on. I am guessing that I receive dthe wrong size chains , but thought I would check here for help. I have walked the chains on the tire as per instructions . I will send pictures and check with the supplier if advice from here does not help. Thank's.