Has anyone installed a Lowarance Structure Scan transducer on a MK terrova 55# thrust model with US2? I think I read somwhere on here that there is a hump on the tm head that might interfear with adding the second td. Also is there a difference in size in tm head from a 55# model to a 80# model? The reason I ask is I have also seen somwhere on here both the 2d ducer and ss ducer installed on tm head with a custom bracket. Is that only posible on larger tm models? I would hate to order a tm and find out it wont work for want im trying to do! Thanks for any help.