The Orange interior clips....the ones that go in the dash....look to be the same dimensions as the white clips in the housing. The hole...that the screw goes into, however is slightly smaller. If I were in your shoes...I would buy 3 of the Orange dash clips..so they matched...and ever so slightly broaden the hole that receives the screw.
I am unsure however, how the white clips in the housing are held in.
HTC Thunderbolt+TT