Thank you all for the great advice,

1) wire guide is bit to complicated for the side loader but it is a great system i have seen some crown turrets with wire guide, relay practical. i totally missed the bottom rack.

2) rack ends to be open by gates or doors out of the building to eliminate rack end space requirement. back up plan is a issue.

3) im looking at BP side loader. i have worked with them in an other company.

but please explain to me further how the guide roller system works.
1) machine enters guides and you release the steering and it guide its self ? no steering lock or any thing ?
2) what about the traveling speed when you are in the guide system ?
3) safety issues where machine goes off track ?

Thanks in advance,