Because so much of Thonotosassa's housing dates to around 1990, we carry stock sized for that era specifically - torsion springs rated for the standard residential door weights of that period, steel rollers to replace the original nylon ones, and standard-reach openers that fit the same bracket spacing as what came installed originally. Mild local climate (we're not dealing with freeze-thaw cycles or heavy snow load here) means we're not stocking cold-weather lubricants or insulated panels as a priority - the failures we carry parts for are wear-driven, not weather-driven.
We stock cables, drums, bottom brackets, and the common belt and chain-drive opener parts that fit 1990s-era track spacing. What we don't keep on the truck is anything for a non-standard or custom door width - those get special-ordered after we measure, which adds a day or two to that specific job.