Posted by on October 25, 2003 at 12:28:31:
In Reply to: Air leak with mulitple tonguing posted by Problems on October 25, 2003 at 09:44:11:
 Whoops, here's a smart remark, but not an insult...
 Simply, you're not isolating control of various different muscles that are involved.  When you use the muscles required to form a "K" sound, you're releasing control of your embouchure muscles.  Solution: fit it.  How? By trying different things with your face until you discover which brain synapses cause everything to do what it's supposed to do.  Then, reinforce it with practice.