How about instead of it being a shuttle make it into a full circuit with inline twists to connect the two ends. It could do get faster and faster each time it hit the LIMs.
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Parks hit for 2000!
PKD,BGW,Knoebels,DP,HP,PKI,HW,SFKK,SFA, Camden, SFO,CP,WL,IW,KW,BP