Join the pro's
do not use less than 15lts per min and 200 bar (2900psi), unless on sensitive areas
there are too many undercutters out there doing a crap job
hit them with a stick and move on.
if you lose a job , the customer will always get back to you sooner or later when the guy who did a crap job goes to sign on for his dole, yeah your right No insurance !!!!!