diff --git a/glyphs/latin-extend-basis.patel b/glyphs/latin-extend-basis.patel
index 3e7f960..2a77964 100644
--- a/glyphs/latin-extend-basis.patel
+++ b/glyphs/latin-extend-basis.patel
@@ -125,8 +125,10 @@ create-glyph 'db' : glyph-construction
 	include : FlipAround MIDDLE (XH / 2)
 	include oeopart
 	include : VBar MIDDLE (XH / 2) CAP MVERTSTROKE
+	if SLAB : begin
+		include : LeftwardTopSerif (MIDDLE - MVERTSTROKE / 2 * CORRECTION_HX) CAP SIDEJUT
 
-create-glyph 'pq' : glyph-construction
+create-glyph 'qp' : glyph-construction
 	set-width WIDTH
 	assign-unicode 0x239
 	include pMarks
@@ -134,7 +136,8 @@ create-glyph 'pq' : glyph-construction
 	include : FlipAround MIDDLE (XH / 2)
 	include oeopart
 	include : VBar MIDDLE DESCENDER (XH / 2) MVERTSTROKE
-
+	if SLAB : begin
+		include : CenterBottomSerif MIDDLE DESCENDER JUT
 
 create-glyph 'OU' : glyph-construction
 	assign-unicode 0x222
@@ -998,7 +1001,7 @@ alias 'latindelta' 0x1E9F 'delta'
 alias 'latinepsilon' 0x25B 'epsilon'
 alias 'closeturnepsilon' 0x25E 'cyrve.italic'
 alias 'smcpB' 0x299 'cyrve.upright'
-alias 'latinphi' 0x278 'varphi'
+alias 'latinphi' 0x278 'cyref'
 alias 'bulleye' 0x298 'zero.dotted'
 alias 'dentalclick' 0x1C0 'bar'
 dual 'alveolarlateralclick' 0x1C1 'bar' (WIDTH * 0.35)