"Dimidowich v. Bell & Howell, 803 F.2d 1473, 1480 n. 3 (9th Cir.1986) (applying California law) (noting that for some products, such as automobiles, the parts market is distinct from the service market), modified 810 F.2d 1517 (9th Cir.1987); Digidyne Corp. v. Data General Corp., 734 F.2d 1336, 1339 (9th Cir.1984), cert. denied, 473 U.S. 908, 105 S.Ct. 3534, 87 L.Ed.2d 657 (1985) (holding that sepa" . . . .