Your tech guy should find a new job and you should find a new tech guy. Like Brett here
Hehe, in my shops, I drill into all my guys/girls that we all give what I call "BEST ADVICE"
I do the same here, all it really means is being HONEST...
Sometimes in the shops it loses us (me) money, in the short term, but long term it makes us a lot of money from regular customers... and a good reputation...
All the best Brett