Actually, the real reason is that it doesn't always work. If your processor or components are rated at a given frequency, they tested fine at that frequency, but when tested at higher frequencies, there is a small chance that the errors were major enough to cause unreliable performance. Usually, however, the timing tests on electronic components are fairly stringent, so there is a decent amount of play before any errors show up. We have a 6 month money-back guarantee that our kit will work with your machine at one of the two frequencies we include, and a 15 day unopened envelope return policy if you don't agree with the terms of an agreement that limits our liability. If you have problems running with one of our kits please contact us about trying out slower oscillators or returning your kit.
Nothing is cut.
The socket snaps on to one of the motherboard's oscillator, and can be easily removed. Actually I was wondering if you provide any buffering or caches. Just a faster oscillator. There are large number of companies offering relatively good deals on these caches. Our kits won't interfere with NuBus or PDS slots in any way.