I use ExtrabiomesXL-universal-1.7.10-3.16.a18 and latest forge. When i
chop Redwood and Fir, wood not drop ! And small issue: forestry tree
farm not work with fir and redwood sapplings (in 1.6.4. version all
works fine) !

Hope you will fix it :)

Best regards,
Roman Kharichkov aka SeNtiMeL.