no mater what your current lifters are or the condition it would be worth the time and effort to call CROWER and ask,
if they could be refurbished or rebuilt or replace the lifters as they see the need, as Id stress that you like CROWER products, but your a bit concerned, one came apart in use,with rather limited mileage,
Id mention that the owner of this website
http://garage.grumpysperformance.com
recommended , uses and promotes, crower products, and has used them rather consistently for decades, and youll post before and after pictures on this web site.....you may get a bit better or faster
service if they realize the process, being carefully documented where hundreds of website members a day will see it, could help or hurt sales