I like a heavier putter too. I feel like it keeps my stroke on line better.
To tell a stupid story on myself... I bought a Nike belly putter via ebay and when I got it, I shortened it to 36" so I could use it normally, but it would be heavier. Well... I accomplished what I wanted except the lines on top of the head are impossible to line up properly now. They were intended to be looked at from a particular angle and I disturbed the natural order of that putter's universe when I cut a foot off the shaft.
I still have it and sometimes I get this wild idea about bending the shaft to try getting the sight lines right, but it usually just sits in the closet sticking it's tongue out at me to remind me of some stupid things I've done.