Zen's comment helped me also remember I also occasionally have the issue of losing power when I'm trying to accelerate through the low gears. I'll step on the gas in first, and I'll get the normal surge, then lose it. Then immediately surge again and lose it again. I'll shift to second and the same will happen until I get into 3rd where it still jerks, but not as bad. Once I'm up to cruising speed, it's fine. This tends to either happen consistently, or it won't at all.
The two problems have not yet happened at the same time so I'm not sure they're related. Maybe you guys can tell me.