YSS shocks/Michelin ties in Chiang Mai?

[Melonade]

I recently had yss xl shocks installed (pcx 150). unfortunately I didn't pay too much attention when the guys were putting them in and subsequently I'm pretty sure they weren't adjusted. when riding since they've been okay but maybe feel a bit hard, like they're set too tight or something. I'm 80 kg and the wife is 50 kg. any suggestions as to how can adjust them so as to get more of a smooth ride on these bumpy bkk roads?