... on the GBT is 3 to 6 hours long. It is possible to have longer sessions but the consequence is that the session becomes more difficult to schedule. Shortersessions may also be justified but the ... Cross, Both Auto, Cross, Both Auto, Cross, Both Auto, Cross, Both0.625 Auto, Cross, Both Auto, Cross, Both Auto, Cross, Both Auto, Cross, Both0.3125 Auto, Cross, Both Auto, Cross, Both Auto, ... Cross, Both Auto, Cross, Both5 Auto, Cross, Both Auto, Cross, Both Auto, Cross, Both Auto, Cross, Both2.5 Auto, Cross, Both Auto, Cross, Both Auto, Cross, Both Auto, Cross, Both1.25 Auto,...