Richard, I admit that the "P" reference instead of a brand name eluded me.
Regardless...
On #1, are you sure you're not experiencing the "growing action bracket"
phenomenon? This condition is -not- exclusive to older actions with pot
metal brackets, and, until it is experienced/diagnosed, can cause quite a
bit of head-scratching and frustration.
On #2, not to insult your integrity, but have you checked the "phantom"
gliders in the section? If not, you have a suspension bridge on your hands.
I've also noticed that with newer, thinner keyframes, some flexing occurs
during subsequent action in/out procedures. Although I can't explain -why-,
I always check bedding at intervals while doing additional regulation work.
Just stray thoughts...
At 07:29 PM 8/31/99 +0200, you wrote:
>#1. From time to time I run into a so called quality grand sort (I wont
>mention the name but it starts with a "P" grin) that has an odd ball
>problem regarding regulation.
[cut]
>#2. Brand new Yamaha C7. Action is very well bedded, and regulated.
>Still on hard play in the middle area, 8 or 9 hammers on each side of
>the note being hit raise (hop) very noticible. Feels like the hammer
>rail is moving. All screws are dead tight. Lots of power seems to
>dissapear. Only happens in the middle section of the action..
[cut]
Jim Harvey, RPT
Greenwood, SC
harvey@greenwood.net
________________________
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-- Richard Davenport (date unknown)
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