Stations 5 and 7 were initially dispatched to a vehicle fire with exposures at 16:58. It was upgraded to a structure fire shortly after the first two engines went responding. 5-10B went on scene and reported a possible attic fire with a fully involved RV. Hydrant problems near the residence hampered crews. Both crews made quick stops and damage was limited to the exterior of the dwelling. Units on scene: 5-6, 5-1, 5-7, 7-9, 7-2, bls 5-8 and 4-8