Enhance the UPS Shipping method to allow for
1) Adjustment of the Real Time Service Rate either up or down by a percentage
2) Allow for the removal of UPS services via a string filter.
Rate Adjustment
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Rate adjustment is accomplished by configuring a percentage value, either positive or negative, via Admin->Configuration->Shipping-Shipping Rate Computation. Returned UPS service rates are adjusted by this percentage before presenting to user.
Service Filter
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Many customers do not support all available UPS services to an area. Filtering is accomplished by providing a list of semi-colon (;) delimited strings corresponding to the service strings presented by UPS. This is also done via Admin->Configuration->Shipping-Shipping Rate Computation. (See included screenshot)