engine vibration

[slarson]

I have a new question since changing out the bars and grips on my 95 Magna. I installed t-bars and new grips, and seem to notice an engine vibration from about 3800 - 4200 rpm's. I suppose this is just a coincidence that I'm noticing this at the same time I changed the bars. The bike continues to run great. I've put a couple hundred miles on it since, and it seems fine.
Is it possible I need to have the carbs synched?  The bike has about 30,000 miles on it.

Any ideas?

[Greg Cothern]

No sync....Do you have Dave Dodge shims??  And how is your bike equipped, stock pipes, aftermarket pipes, or K&N??