g95: reading more data than the record size (RECL)

I am trying to recompile some old .for code with g95. The binary runs
fine, but I need to make the arrays larger. When I compile (g95 -o
a.exe b.for) the program runs until it gags on reading an
'unformatted' file:

here's the code:

open(unit=12, file=zbot_file, form='unformatted', status='old')
call read_write(0, 12, id, ny, nx, y0, dy, x0, dx, zbot)
***
subroutine read_write(mode, lun, id, ncol, nrow, col1, delcol,
&row1, delrow, array)
dimension array(1), work(1000)
character id*56
character pgm*8
read(unit=lun) id, pgm, ncol, nrow, nz, col1, delcol, row1,
delrow

The last line above is the one for which it says:

UNIT 12 "100USGS.grd " Fortran runtime error: Reading more data
than the record size (RECL)

The record length, in another program that transforms files, appears
to be 128, and I tried that with recl=128, but get the same messages.

Any tips on how to get around this?

TIA
.

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