Things are very different down here.
I am currently running at 3 weeks turn around
The shop up the road is also running 3 weeks average.
Most Stihl shops have a 2 week wait for a quote then another 2 to 4 weeks for the repair
Stihl warehouse has now set minimum order values to cut their warehousing & distribution cost so if the shop does not have the $ 2.00 part , I have to either ring every Stihl shop in the city to find one the pay shipping or wait till the shop I order through hs a minimum order which for them is $ 5000, depending upon when they last ordered this can be better than a month.
SO I do scheduled yearly services on the blowers during the quieter time July to Sept and replacing the seals is a routine maintanance job. Schedules servicing parts get preordered repair parts is luck of the draw if I have any in stock
My current store is nearly 3 times my annual turn over, there is only so much one can afford to hold.