[Zope] Ram cache and ZPT

So Im fine tuning my Plone site, by putting some ram caching on. So i customized two objects about_slot and links_slot (both page templates) and put them in ram cache. I then hit the a page a few times, no hits to the cache, it seems these pages are being rendered every time. Basically lslot is passed through as a string in the main template for each slot, to the following code, so for example here/about_slot/macros/aboutBox. <metal:block use-macro="python:path(lslot)"> This is Zope 2.5.1. Any ideas? -- Andy McKay www.agmweb.ca