I just checked my IP-036 and luckily the only slop/play that I have in the pivots of my frame is the rear shock mounting point. I probably could look into either getting a different rear shock bushing or maybe go with the RWC bearings that have been talked about earlier. However, the approx 0.5mm of movement isn't felt while riding, probably because the shock is always loaded with my weight. If I want to seek perfection, I may look into it a bit more at some point in the future.
My only other issue is with some slop/play in the headset. This I do feel while riding. Not sure why, I have tightened the stem up, in the correct order, with as much preload as I can. I checked the spacers, however, it just seems like I can't get that last bit of movement out of the system. Compared to my IP-057 which has no play whatsoever, I wonder if there is a mis-match of one of the angles of the headset bearings and the cup in the frame.