Is there a measure or rule of thumb to apply if I think the chain is too long? I am new to trikes and need a little advice. The Zoomer elite in question was recently acquired and in fitting it for my 5'5" wife the chain droops quite a bit, maybe 5" below level. Also the front idler seems like it's not properly installed. From the seat and facing the pedals the arrangement is as follows: spacer / idler / spacer /idler. Looking at this arrangement it seems that it might be better alighned as follows: idler / spacer / idler / spacer.
The snow and cold has maybe driven me crazy. Too much time on my hands with out being able to ride out side, but can anybody help with these concerns?