Nice game Shipper...based on your info, I'd say your current Robo is about a 3-3.25 x 4.5-4.75 mb? This layout does promote length and a sharper finish on the backend.
Do you want the other Robo to be smoother? If so, then I'd suggest a pin under bridge with the mb out towards your pap. Layout should be about a 4.5x3mb, this should give you that smoother arc, also do not leave too much positive static weights.
If you want more delay to help push the ball down lane without having to "force" it, you can also go with the pin next to ring area and mb left of thumb like my Inertia.
The difference between the 2 layouts are when they will start hooking or reading the mid lane. The mb near pap will roll sooner and control the backend. The second layout with the mb on the other side of the thumb will force the ball to push and delay it's reaction until further downlane.
I'm putting up a couple of more vids on the Inertia to show how much it pushes down lane with the mb left of thumb drill. Take a look and see if that is what you're looking for. Hope this helps some....
--------------------
Rick Leong - Ten Pins Pro Shop
Track Intl. - Amateur/Pro Shop Staff
Vise Inserts Staff
www.Trackbowling.comSee profile for Track Ball videos
*El Presidente of the Track Legion