will it hurt. whats your opinion

This reamer Lisle 36500 reamer came in last night and I used it this morning and I am not impressed with it at all. I used it on 2 cylinders and it doesnt seem to cut properly. I had the adjustment almost as tight as it would go on the top and there is still a small ridge left. It just doesnt seem like it is cutting as much as it should.
Engine Cylinder Ridge Reamer [215898] - $60.85 : Toolsource.com, Your Professional Tool Authority!

this is the same basic tool I have, the old Snap-on # was WR-30 I believe. It locks in the bore, then You adjust the bit holder plate out until the bulkhead is almost up against the untouched bore above the ridge, then You release the spring-loaded cutter & turn the whole upper table. As it does, it feeds the cutter up from under the ridge, & cuts it from the bottom edge up, like a mini manual lathe.