I have a Mossberg 500 Cruiser, 12 GA Pump shotgun, with 7 shot capacity. I have modified it with some add-on parts, and want to add one more. I bought a heatsheild from ATI. I followed the instructions on taking off the barrel of the shotgun, widening the tabs, and then sliding it on to the barrel, and reinstalling the barrel. Then I get to the part where I have to somehow squeeze the tabs together so I can put two bolts in them to hold the sheild on the barrel. There is where I am having a problem. How do you squeeze the tabs together so you can install the nuts and bolts? I hope this makes sense to someone who has done this before. I have tried a pair of channel lock pliers and they will not fit around the barrel enough to complete this task. Any ideas? Thank you very much for any advice I might receive. I am familiar around guns, I have just never installed one of these before.