always have my specs on! Well got into DIY overseas where its more common. Initially didnt bother here as labor is comparatively much cheaper. But after seeing our local ustads on how they do things and these ustads costing me money in terms of avoidable damage I just dont trust anyone to do it properly. Not to mention some people having their own stupid logic for eg saying you must replace brake pads after 20k irrespective of how much pad material is left. But I do enjoy getting my hands dirty.
Heck I would even do my own alignment if I had the equipment. Had an argument last time at the dealer, some new guy just wouldn't do it right, just doing what he was taught which was half the job only. How I absolutely hate when im told "kuch nahi hota".