Super Jet Driveshaft / midshaft issues

Hey all.
Took out my superjet engine for a few reasons. One of which is I could hear a 'clanking' noise that sounded as if the prop was scraping on the wear ring or something but they are both spotless. I found that when I rotated the midshaft it would 'clank' against the driveshaft. When the motor is running this is amplified into a constant rattle.

So first thoughts were either screwed driveshaft or midshaft (or both). Cleaned out the midshaft and put my spline tool into it (as if I was removing the coupler) and it was a super snug fit, no play at all. And the driveshaft doesn't seem to have that much wear on it. I've attached a few photos of the driveshaft. What are peoples thoughts. Thanks in advanced.
20151205_205637.jpg 20151205_205643.jpg 20151205_205654.jpg Screenshot_2015-12-05-22-59-21.jpg Screenshot_2015-12-05-22-59-40.jpg Screenshot_2015-12-05-22-59-48.jpg
 
Pump bearings seem ok the midshaft bearings are pretty average. Hard to see inside the midshaft though. I'm thinking i'll just replace the midshaft, seals and bearings as well as driveshaft. Start fresh.
 
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