Power Director Problems

Hi,

I'm a novice at editing. I have having problems splicing two bits of video together in the Power Director "Master Video track" . I have got two bits of video side by side. I have noticed that you have to use the "lock/unlock" feature in order to be able to get the slider to go past the join. I guess you have to have them locked when you use "Produce" in order for them to form one complete video. I am having problems with the "trim" feature. The "mark in" works ok because it is in the first video segment. But when I try to use the "set mark out" timers, when I set it at 19 minutes it jumps back to 4 minutes. Previously when I set it it was jumping back to 14 minutes which is when the first segment ends.

Is there a procedure for joining the two segments that I have missed?

Cheers Chris Parkinson