I am a newbie here!!! I joined because I just started riding again after taking a break for several years. I ride 6 days a week and take lessons twice a week with an instructor. Currently, I ride two different horses. One is a black throughbred mare that is 22 years old and 15.3 hh, named Ebony. The second horse is a lively 18 year old gelding, also a thoroughbred that is 16.3 hh, named Lenny.
When I ride Ebony, I have good balance and feel comfortable walking, posting and cantering. My goals are to jump and do dressage. However, when I ride Lenny, I lose balance and pull on his mouth or pitch forward. I try to rise in time to Lenny's gait, but I end up losing rythum and just bounce around in the saddle.
Lenny also trots very fast when I don't have enough contact or slows way down when I post. He is very light in the mouth and does not require much in the way of leg cues to move him forward.
Does anyone have any advice/visuals/tips that will help me keep my shoulders back, my hands quieter and my post in time with BIG Lenny??