back to the group, and a cold start problem

[spambaitingmisanthrope]

Howdy y'all, I am back after some 4 month lapse... what's up? Anyways, I have a bug: my KLR has some 30K miles on it and it starts funny when cold. Doesn't fire up for a while, but backfires a lot - until it catches up after some serious cranking. New plug a couple of months ago, decent spark, just ran a can of SeaFoam through the carbs (a panacea I picked up on the other bike list). Could it be - horrors! - KACR sticking??? Please suggest if I need to go and buy that truck I was eyeing for a while... Thanks! D.