About two years ago we had a pulmber replace all of the base board heating metal housing because we were remodeling the rooms on our main floor and the old hosuing was scrathed and not very nice to look at. Long story short we left the fin elements on the copper pipe in place but the plumber ordered the wrong sized housing. I just took off one of the front covers and discover that all of the fins are bent. Do bents fins on baseboard heating significantly affect heating efficiency and costs? I have already straightend out the fins on a small section and replaced the front cover but it is now bowed. Some sections are very damaged. This plumber had to know he was bending the fins as he installed the new hosuing but didn't have the deceny to let us know. I am so angry!