IN SILICON VALLEY, IDEAS ABOUND ON HOW TO FINE TUNE BIG BLUE.(Business)

Byline: Paul Freiberger Hearst News Service

In Silicon Valley, it isn't difficult to find Monday morning quarterbacks who think they know how International Business Machines Corp. could improve its business.

When blemishes appear on goliath IBM, they are visible to everyone. Lately, IBM's problems have become even more evident.

IBM last month said it plans to eliminate 10,000 jobs by the end of 1990, or 4.6 percent of its U.S. workforce. In conjunction with this reorganization, IBM will close a research facility in Menlo Park, Calif., and shift 300 employees to its San Jose, Calif., facilities. IBM said it would set aside $2.3 billion to cover the costs of this …