Well since I had one come loose and one bend on adjustables I will take solids any day of the week. 2 different shops one a dealer one an indy
Adjustable s are only good for saving time and money if someone else is doing the job. Why have a strong motor with lots of cash in it and a weak pushrod?
Cars have hydraulic lifters and some engines have high lift cams. They use solids too or adjust the rocker arm for clearence