Totally Bassdude, I meant no offense btw. Only that not having an insert kit does not automatically mean inconsistent fps. I understand the job of an insert kit as increasing efficiency primarily, its ability to stop roll-outs if one is underboring is also possible, though imho not as effective as a dedicated detent mod like the SSC or ASP ones (unless your paintballs are perfectly spherical.). As for an insert kit increasing accuracy, hmmmm I'd have to see the pudding on that one!
808jackal also has a good idea, though that has not happened to me... yet.