take the dash out and fix it correctly, it's worth it. The cost of a new diaphram for the pod is about $6. It's not that difficult to pull the dash, albeit it a bit time consuming. It's less than a day's job, unless your lazy like me, it's hot as hell out and your work area sucks like mine does.

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1982 300TD 210K miles ("The Replacement" aka "The Anvil") - SOLD
1979 300SD 245K miles (never ending project)
2007 Pinarello F3:13
1995 Ducati 916 (SOLD, sniff)
1999 Ducati 900SSie (SOLD)