Yes, either get paddock boots and half chaps or tall boots. Those leathers can leave some nasties.
Like someone else said, the stirrup bars tend to be bulkier and poke out a lot more in cheaper saddles.
It's likely your horse was refusing the jumps because you were uncomfortable and unbalanced and it made him uncomfortable and unbalanced.
Also, jumping western=big no-no. Not just because they are heavier, but the horn. If your horse over-jumped, the horn can jab you in the stomach and cause internal injuries. Scary stuff. Posted via Mobile Device