Grafts not dropping

Hi,
I have different combinations of grafts and they prevent dropping of any grafts...

I cannot find any common patterns, last one that I have equiped is this:

Item Class: Grafts
Rarity: Rare
Necrotic Caress
Aegis Tulgraft
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Quality: +6% (augmented)
Graftblood: 1080/11237 (augmented)
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Requirements:
Level: 72
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Item Level: 79
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{ Implicit Modifier — Elemental, Resistance }
+5(3-6)% to all Elemental Resistances (implicit)
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{ Prefix Modifier "Meaty" (Tier: 4) }
67(65-74)% increased Graftblood stored

{ Prefix Modifier "Shrouded" (Tier: 2) }
27(27-30)% increased Evasion Rating

{ Suffix Modifier "of the River" (Tier: 3) }
Skills used by this Graft have 20(20-24)% increased Cooldown Recovery Rate

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Graft items can only be modified by Implant currencies.


Before the other hand has:
Item Class: Grafts
Rarity: Rare
Rancid Phalange
Replicating Eshgraft
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Quality: +10% (augmented)
Graftblood: 1046/1791 (augmented)
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Requirements:
Level: 45
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Item Level: 58
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{ Implicit Modifier — Speed }
5(3-5)% increased Movement Speed (implicit)
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{ Prefix Modifier "Rapid" (Tier: 3) }
4(4-6)% increased Attack and Cast Speed

{ Prefix Modifier "Bulging" (Tier: 6) }
53(45-54)% increased Graftblood stored

{ Suffix Modifier "of Destroying" (Tier: 6) }
Skills used by this Graft deal 105(90-109)% increased Damage

{ Suffix Modifier "of the River" (Tier: 3) }
Skills used by this Graft have 23(20-24)% increased Cooldown Recovery Rate

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Graft items can only be modified by Implant currencies.

And grafts completely stopped dropping after I have added the tulgraft

Grafts are not global drops. They only come from inserting gifts of the Graft variant into the tree which I believe always drops 4 random Grafts, but I don't use that one often.

If you're not getting enough gifts, you need to run more maps, spec gifts from mysterious tree, or luck into Fortress and open the chests before going to the center (I average around 8-10 random gifts per Fortress doing this).