i need some help on this one. when i acquired this car 82 240d, leaves were blocking the drain holes in the engine bay. i cleared that out. however, when it rains, water somehow still enters the cabin. it is a small drip that is in the vicinity of the parking brake pedal. all the drain holes are clear.
has anyone out there experienced this? any tips on how to find or solve this nagging problem? thanks in advance

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$500 1982 240d owner "Gunter"
125k miles,4 speed manual
crank windows, MB Tex, all original
no a/c, daily driver
Scorecard so far....
$230 Maaco paint job
$27 dimmer switch, $40 shutoff valve, $45 brake MC, $260 calipers, $40 brake hoses, $40 side fender trim, $20 balancing, $109 lifetime alignment, $10 fuel return lines, $115 oil&fuel filters for next 30k miles