You are ignoring the fact that you arent the sole party in hiring that contractor. YOU can be straight forward and truthful, I have no reason to believe otherwise. But that contractor has to meet all the other gov contracting bullcrap and your purchasing dept dopeheads. You arent signing the contracts and writing the checks for submitted invoices. ALL the structure above you is doing that. You are the poor sap trying to do your best, but are embedded in a dinosaur of headaches and bullchit.
But you just pointed out a situation where you pay a couple thou a month for johnny on the spot equipment replacement service. Couple thou a month is not enough to carry a contract, much less be proactive in supporting it. IMHO. So a company willing to take that kind of obligation may not be a star provider.