Help with heat seal mounts

[P3D Mark Josephson <icebox@xxxxxxx>]

I've been using slip in mounts for most all the time I've been shooting
stereo, but since the supply has dried up for the next month or so, I had
to cave in and buy a bunch of heat seal mounts from reel 3d.  I have 7
rolls sittin around waiting to be mounted, and 14 or 15 more coming back
from Slodak in the next few days (hopefully).  

I am very disappointed & flustered so far. While there are cuts in the
cardboard that are supposed to position the film, I find that the
curvature of the film makes it impossible to use these.  I wonder how on
earth I'll be able to set alignment remotely close using these.  I used to
have an alignment gauge from back when I started out, and was using
aluminum mounts, but it (and the lightbox it is taped to) have vanished
since my last move.  

My questions:
1) what do you heat-seal users do to get the film straight & mountable.  I
know that reverse rolling is supposed to work...but in my experience it
only seems to curve the film the opposite of the way it came.  I've got 3
rolls hanging in my closet with binder clips weighing down the ends right
now.  

2) I have some silver mounting tape like reel 3d sells, which should
theoretically hold the film down OK, but the tape is too wide & gets in
the way.

I'd like to get started mounting tomorrow, and avoid spending 2+ hours
mounting each roll...I'll never finish at that rate.  Any speed ideas?

GRRRR!  I hate mounting!  If it weren't for no-brainer slip-ins, I'd
have given stereo up years ago.  

--
Mark Josephson  | "[US Atty] Jim Burns is putting aldermen in jail so fast, 
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@               |   --Chicago Alderman Ed Smith (28th), 7/30/97
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