Kaypro introduced a slimmed-down version of its powerful 286i IBM AT-compatible desk-top computer . . . Rykoff-Sexton has completed its previously announced purchase of the business and certain assets of Brodie/Dohrmann, a privately owned food-service equipment and supply company based in Seattle . . . Western Airlines reported that it flew 795 million revenue passenger miles in April, up 5% from a year earlier . . . Textone said it has entered into a definitive merger agreement in which Nortek will acquire all remaining outstanding shares of Textone.