Strange putter quandary

[turtleback]

One of the things I've read in several places is to find a putter that looks good to you and that you feel comfortable with.  Recently I bought a used putter at my local golf store.  It is called a Hog and it has a very large grip and the shaft tapers down smoothly from being very fat at the grip end to being normal diameter at the clubhead end.  The clubhead is an oversized "ping" type clubhead that is also pretty heavy (but not as heavy as the Heavy Putters).  I know that it is an unusual putter but since my golf shop has a 30-day return it for full store credit policy, I figured what the heck.

So I've been playing with it for about 5 rounds now and I have decided that I am not really all that comfortable with it.  I don't feel like I have good feel for distance and it doesn't seem like I am bringing the putter smoothly back and through.  So what is the problem?  With this putter I am putting the best I had ever putted in my life.  I have gone from struggling to get under 36 putts to averaging about 30 putts.  Now I am not stupid and I am not going to switch away from it, but it just seems weird to putt so well with a putter I feel so uncomfortable with.

Anyone ever experienced anything similar?

PS:  Thread should have read Strange, not Stranfe.  I hate when that happens.