Twisting chains lowers the shear strength. It might not matter much on a light pop-up but a large unit could shear G43 grade chains that are twisted enough to shorten them. Use a small diameter wire tie two links together creating a loop to shorten chains. When needed wire will break, chains will function as normal. A slight twist in the chain does not affect strength you would be challenged to get a very long chain perfectly straight.
2016 Ford F250 XLT 4X4 6.2L
2015 Rockwood Signature Ultralite 8329SS
Nights camping in 2016: 19 nights
Miles traveled in 2016: 2,575