Try using Petra's guide for your higher level gains. You'll still be imbuing jingasas, but with reflect physical, lower reagent cost, and luck.
70-72 Skill: Imbue 1% rpd (10 times)
72-74 Skill: Imbue 2% rpd (10 times)
74-76 Skill: Imbue 3% rpd (10 times)
76-78 Skill: Imbue 4% rpd (10 times)
78-80 Skill: Imbue 5% rpd (10 times)
80-82 Skill: Imbue 6% rpd (10 times)
82-84 Skill: Imbue 7% rpd (10 times)
84-86 Skill: Imbue 8% rpd (10 times) * (Suggested point for the people using Dagger method to switch to this one)
86-88 Skill: Imbue 9% rpd (10 times)
88-90 Skill: Imbue 10% rpd (10 times, or save for 90+)
90 Skill - two skill Imbues begin:
90-92 1st mod 10rpd (once), 2nd mod 1 lrc (9 times)
93-94 1st mod 11rpd (once), 2nd mod 1 lrc (9 times)
94-95 1st mod 12rpd (once), 2nd mod 1 lrc (9 times)
95-98 1st mod 13rpd (once), 2nd mod 1 lrc (9 times)
98-100 1st mod 13rpd (once), 2nd mod 2 lrc (9 times)
100-102 1st mod 13rpd (once), 2nd mod 3 lrc (9 times)
102-104 1st mod 13rpd (once), 2nd mod 5 lrc (9 times)
104-105 1st mod 13rpd (once), 2nd mod 7 lrc (9 times)
105-109 1st mod 13rpd (once), 2nd mod 8 lrc (9 times)
106-107 1st mod 13rpd (once), 2nd mod 9 lrc (9 times)
107-108 1st mod 13rpd (once), 2nd mod 10 lrc (9 times)
108-109 1st mod 13rpd (once), 2nd mod 11 lrc (9 times)
109: 3 mod imbuing begins
109-112 1st mod 13 rpd (once), 2nd mod 11 lrc (once), 3rd mod 1 luck (8 times)
112-113.5 1st mod 13 rpd (once), 2nd mod 11 lrc (once), 3rd mod 10 luck (8 times)
113.5-115 1st mod 13 rpd (once), 2nd mod 11 lrc (once), 3rd mod 19 luck (8 times)
115-118 1st mod 13 rpd (once), 2nd mod 18 lrc (once), 3rd mod 1 luck (8 times)
118-120 1st mod 13 rpd (once), 2nd mod 18 lrc (once), 3rd mod 10 luck (8 times)