...chipping in is caused by rider error. Namely, jumping ahead.
I am so proud of Monty, he managed to correct the bad takeoff, land in a good spot, and take off in a good spot for fence number two - all in the space of a single stride. Such an honest horse. The ONLY time he chipped in was the time I jumped ahead.
Also, other than that one really bad anticipation, any crit? My stirrups were a bit on the long side but I can't shorten them any more. I think I'm a bit far out of the saddle too. Anything else? ME, not him, he gets lazy over small fences because he's a high-level eventing horse. His form over anything over 3' is pretty much perfect. These are about 2' - oh and this is jump one of a one-stride double. I haven't jumped anything decent in a couple of months and the saddle doesn't fit me, plus we were working on striding - I usually train to about 3' and was aiming to move up before my accident.
Edited; these photos are off my phone, and it distorts photos (note the jump standard that bends one way in one photo and the other way in the others), so these pics may not be the most accurate. Also, I am a showjumper/eventer. And excuse the release in the first pic, or rather the lack of!