Amen. Here's a quote I wrote following my service to a pair of Stihl saws that a user's father brought in: "Your dad indicated that neither of these saws ran, so I was expecting much worse condition and performance. It appears that saw dust, dirt, grime, and blocked filters accounted for most of the problems you encountered..."No way to treat a saw, that's just ignorance and lazy. Not brought up to respect tools!
Both saws ran fine after I cleaned them up and did minor tuning. They were literally packed with sawdust inside the carb cover. Imagine filling the carb cover with sawdust and then ramming it back into place. That's what it looked like when I first started to work on them.