If your LP shot resistance is inconsistent sounds like PF build problem, most likely in fill and distribution. Generally speaking Miss Silvia is highly sensitive to poorly built PF loads so not too hopeful she will cure your problem of inconsistent pulls. Since IIRC the machine you purchased had the OPV adj down won't be as bad as stock, but the handle side of the PF is usually the problem. Might be helpful to review some of these referenced articles and threads:http://www.home-barista.com/forums/viewtopic.php?t41There are many different styles that work well for different people. Find what works for you consistently and stick with it. Naked PF paramount tool in diagnosing PF build problems. FWIW I fill to slightly heaping (from grinds dispensed into SS canister which helps minimize clumping), very lightly side tap the side of PF to settle grounds (don't tap the PF locking tabs!), Stockfleths to distribute and level grinds, light level tamp, couple light downward taps on counter to knock any stray grinds down, med mildly nutating tamp to firm level tap ending in almost no pressure polish lifting the tamper away. Also, when working on your technique it's best to stick to one forgiving blend at the same roast level each time (like Monkey) until you are consistent with it. Filling by strictly weight only makes sense if pulling the same blend/roast all the time. 7/14gr single/double PF loads are starting ballpark parameters, not set in stone to always use every bean every machine. That said with each different blend/SO your technique should yield about the same weight PF build to build for that particular blend/SO. Once consistency achieved then can play with up/down dosing and how it affects different types of shots, types of beans etc. Kona Konnaisseur miKe mcKoffee URL to Rosto mods, FrankenFormer, some recipes etc:http://mdmint.home.comcast.net/coffee/Rosto_mod.htmUltimately the quest for Koffee Nirvana is a solitary path. To know I must first not know. And in knowing know I know not. Each Personal enlightenment found exploring the many divergent foot steps of Those who have gone before. From: homeroast-admin [mailto:homeroast-admin] On Behalf Of Steve Hay Sent: Tuesday, July 25, 2006 7:31 PM Grinder: Mazzer Mini Measure: I suppose by volume. I just fill and tamp. Interesting thoughts. Maybe I should measure by mass the coffee going into the puck. On 7/25/06, Brett Mason wrote: Steve, what grinder are you using? Do you measure the grounds for each load? Eliminating variables is the key to getting consistency, which in turn should let you move toward the shots you desire... Brett On 7/25/06, Steve Hay < hay.steve > wrote: On 7/24/06, Woody DeCasere < decasere > wrote: um i guess it was Steve Hay, did i wi Huh HUh !?!?!?!?! Yep. I'm rather excited because I've not been having terribly good luck with my Pavoni. No doubt its a great machine, but I have having a heck of a time getting any amount of consistency from it. Sometimes there is no resistance, sometimes a ton. I'm hoping Silvia will help me actually produce some good shots and in the mean time teach me enough to use the Pavoni successfully.