Originally Posted by
DJ_Shakespear
I happen to be sitting in that boat

That's why Im heading towards getting a 733 evo.
If I was to get the R4, I would scour this thread to see if there is anything else I would need to do apart from making sure the rear diff is nice and snug-fitting.
I have only had 2 issues with the car. The first was the clutch nut coming loose. Easy fixed with some loctite.
The 2nd issue was the weak diff gears. I have been told that the hardened diff gears will be released by Kyosho sometime in June.
In terms of getting a 733 I think you will have more problems than this. I had a 733 last year for about a month and the list of problems with the car were almost 2 pages long.