Methods and apparatus comprise a conveyance structure to carry a tool into a wellbore. Said function models are based on vehicle characteristics determined in connection to development and manufacturing of said vehicle and hereby on real characteristics of the physical vehicle. These bicyclic nucleoside analogs are useful for enhancing properties of oligomeric compounds including for example enhanced nuclease resistance. The substrate having the patterned resist formed thereon is heated within an oxygen atmosphere to adhere a metal fine particle to the surface of the substrate, while removing the resin in the patterned resist. Said device has a stop which prevents overshooting of said final closed position, even when greater force is applied. Each strut engages with a respective ball and socket joint on each of the structures, and defines a variable distance between the centers of the ball and socket joints to which the strut is connected.