OK, it's clear that there are a number of different applications shown here...
Scott, with regard to raising the height of the Xtend-a-Sight foot 1/2 inch or so...I have to tell you that I understand the frustration, but I've been chastised for it being too tall for a couple of customers...Nothing's ever perfect. I think that you could do with a hot shoe PC adapter...literally a 1/2 to 1 inch extension. The real purpose of it is to add a standard PC cable connector to the hot shoe when you have one of the older type of flashes. Here's one source (Vello at B&H).
Vello Universal Hot Shoe Adapter - PC Connection + Top HSA-PSU
The one downside is that there MAY end up being a little side to side movement, as it's really for a flash attachment, and (remember) a little slop is not a big deal for that application. Note: The ebay PC adapter unit is plastic-heavy, so be a bit cautious...For $1, you get what you pay for there...any weight or movement could crack out the sides and you might have a tumble.
Lauren, it sure looks like you've mounted a 7/8 (some call it 5/8) weaver mount to the 3/8 portion of the Xtend-a-Sight (really designed for the smaller Daisy mount Red Dot Sight). I'd be a bit concerned about how well it connects as the profile of the 3/8 portion is really quite different. Now it DOES look like the top and bottom attachment rails have a different profile so that may be the key. The way the brackets are oriented could be completely rotated top to bottom, and it'll fit the bottom rail. As I've not seen the Pentax I'm going to have to ask for a profile shot from the side to see if there are drop in connecting rods that normally fit across weaver mounts. If you can drop the entire unit down to the lower (wider 7/8 inch) rail, I'd do it.
For Sandy, I cannot tell if those mounts are for Weaver mounting or not and their marketing department looks like they want to keep it a secret! Looks interesting, and will likely work...it's a bit expensive!
And hats off to the velcro solution. Shims are like moulding...they cover up a wide variety of sins. It is odd, however, that the alignment is that far off. Have you taken a look at your hot shoe to make sure it's completely horizontal? As an alternative, a small shim in the front of the shoe might work as well.
Finally, for those of you really on the bleeding edge of things,
Leupold DeltaPoint Reflex Sight Matte 3.5 MOA Dot FREE S&H 66135, 67435. Leupold Red Dot Sights.
it's IR for cameras using a sight mounted to the Xtend-a-Sight...Pricey, but rather effective for very dark photos...No, I haven't bought one yet. ;-) Maybe after I finish my next audio book.
Best,
Phil Williams
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