Got my Howell conversion cylinder for the new to me (still unfired) ROA. It is a bit tight, but does slide into the frame. I see barely a sliver of a barrel/cylinder gap. The cylinder will cycle normally for all except one chamber. Seems to bind while the hand is pushing it, and I can't pull the hammer all the way back. Will go just a bit past half cock. I can lower the hammer back down to half cock and the cylinder is free to manually turn it a bit more while fully cocking the hammer over that binding chamber. For now, it works good mechanically if I use the binding chamber as the unloaded "safety" chamber for the hammer to rest on. Will this loosen up after several rounds have been fired?