Well if you're truly adverse to doing it yourself then:

STREET PERFORMANCE
7605 Woodbine Ave, Unit #16
(Shared space with T/M Automotive)
Markham, ON L3R-5V3
416-450-6161

The mechanics name is Jimmy. He is the best mechanic I know and I have had him do work for me before the days of doing it myself and have sent many friends and family members there - he is truly fantastic and a genuinely good person. Completely honest and willing to go the extra distance - and his prices are great too.