ALS Script, marapara, is one of the many rip-offs of the Shelley Allegro like Bitstream's English111 Vivace.
Although you asked to not to identify, here you go.
Left leg of the 'A' castrated.
I don't know about FontForge but most all fonteditors have a tool to batch edit glyphs like changing the advance width.
But
If you have already done the kerning the result will be an unpleasant surprise. You will have to do the kerning again as glyphs may now overlap. Also, not all glyphs should have the same advance widths. An 'A' needs far less than an 'M' and an 'O' or 'C' is somewhere in the middle. And the left advance width of the 'D' is more than the right advance width.
You are probably better off doing it by hand, glyph by glyph.
Ultra Bold. Or one of the many copies around.
One of the many Baskerville typefaces around.
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