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Discussion Starter #1
Still working fine,...no hint of dieseling noise returning.

Beyond that, my other observation is that the on throttle/off throttle transition seems to be just a bit smoother with the Polish primary spline adapter installed.

I've tried to keep a smooth wrist on the throttle ever since I found out about the primary spline issue on the 2003/2004 models. It's become a bit secondary to me to do so,...just to keep it from experiencing un-necessary stress.

But that doesn't mean that I'm easy on the bike.

I don't abuse it, but I've always ridden my bikes somewhat enthusiastically.

Most of my miles since the change to the polish adapted have been on the interstate and I usually hold it around 85 mph,..with occasional short dashes exceeding that figure.

I've ran the bike a bit more briskly since installing the new adapter just because if its got any surprises in store, I want to find out as soon as possible.

But all I have to report is *zip*.

It works great, runs quiet and smooth.

Installing it is pretty much a no brainer for anyone who can glom onto an impact wrench for an hour or so.

I bought an electric one from Harbor Freight for $50 that seemed to do a good job.

My opinion is,...if you own a 2003 or 2004 model, you need to get one of these improved primary spline adapters in it as soon as possible.

I can't say for absolutely certain, but my gut feeling is, they reduce stress on the entire primary shaft assembly,..including the bearing.
 

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Good to hear. I really need to finish my lighting upgrades and get back to riding my '03 again.
 

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Smitty, I was glad to see your post about the adapter smoothing out the throttle response. I had posted my initial feeling about that back at the end of May on a previous thread you had started asking for a summation on the polish adapter. I thought maybe I was imagining it, as I only had a couple hundred miles on the adapter at that time. Having since added a few hundred more miles, I am pretty sure it has made the throttle response "firmer" and the engine braking is not as rough/sudden feeling as it was. Still JMHO.
Rick.
 

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Discussion Starter #4
3500 miles.

Still no noise,..still smooth.

I'd be interested in hearing any other reports on the improved adapter.
 

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Stealing this thread, sorry.

I have an idea but I do not have a 2003 that is running to try it. So IF a 03-04 rider would want to do a test and pay for the new bolt and shipping I have an adapted adapter that you would just add on top of your original one with a longer bolt to pull it together. If my adapter adaptation works, it would be much cheaper. All it will take is someone that has paid for the Polish adapter to sell you their old adapter, slide my peice of DOM tubing inside it and bolt it in over the stock one so you have two adapters spaced apart. PM me if you want to try it, at your risk that is. :D
 
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