Clean out the RTA, and put anti-seize on the outside of the bushing will make it easier. There's a beveled edge on both sides of the bushing to get in seated in the RTA easier, that in conjunction with clamping the bushing and using the MIS tool to pull the bushing into the RTA will get it in there.
2001 ///M3 Cabriolet Titanium Silver/Imola Red/6SPD
2007 Audi RS 4 Daytona Gray/Black/6SPD (SOLD)
2007 Audi A4 Avant Light Silver/Platinum Grey/6SPD (TRADED)
1999 Audi A4 Avant Light Silver/Black/5SPD (TOTALED)
2001 Honda Prelude Satin Silver/Black/5SPD (TRADED)